Originally Posted by
speedracerntrixie
OK, spent most of the weekend moving, good news is the new 40% Extra can come out of storage and I can get her finished up. So I figure when I do get her flying I will give you guy's method a try. With that said lets see if I have this correct.
If I'm flying in a cross wind I first have to determine the angle the wind is coming relative to the runway. Then based on the airspeed I think I'm going to be flying I will need to determine the amount of crab angle into the wind. Then without any instruments at all I am supposed to duplicate from one pass to the next the same exact airspeed and crab angle on an airplane flying anywhere from 300 ft to 1200 ft away from where I am standing? If I do all this correctly I will be able to do strait passes parallel to the runway? Will the 1/2 gallon of fuel I will be burning be a variable? It is approx 15% of total aircraft weight at take off. I suppose I can have my caller standing there with a wiz wheel.
I hope this sounds as silly to you guys as it does to me.
No you don't have to do that at all you just eyeball how much drift correction is necessary, the same principle applies to flying real aircraft when flying "seat of the pants" or during circuits in cross winds, you just eyeball it.
In RC model flying, you can fly without having a clue about aerodynamics. In full size, you won't get a license unless you pass certain exams proving you have at least a basic understanding.
I know you seem to be against full size pilots offering advice in these forums but if somebody asks a question, what is the harm in getting the "technically correct" answer?
Most RC flying is eyeballing and correcting what you see happening, I never think of vectors and formula when I am flying, RC or full size . That being said, what is the harm in getting the right answer when a question is asked?